\vskip10pt
\begin{table}[h]
	\centering
	\caption{IEEE 802.16 Projects and Standards}
		\begin{tabular}{ | l | l | l | l |}
			\hline
			Assigned Level	&Modulation	&Coding Rate	&Receive SNR \\
													&&&	Treshold (db)\\ 
													\hline	\hline
			1	&BPSK	&1/2	&6.4\\
			2	&QPSK	&1/2	&9.4\\
			3	&QPSK	&3/4	&11.2\\
			4	&QAM16	&1/2	&16.4\\
			5	&QAM16	&3/4	&18.2\\
			6	&QAM64	&1/2	&22.7\\
			7	&QAM64	&3/4	&22.4\\
			\hline
		\end{tabular}
	\label{tab:chapter3_1}
\end{table}